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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
Yep. The complexity is still 0(n) but for very long lists it will do the math twice as you say.
Thanks. An important lesson :)
me too. damn!
There's no such thing as
O(2n)
.This comment is hidden because it contains spoiler information about the solution
isn't it looping the list twice?